Wtc Misrepresentations: New Book, Requesting Feedback
May 17 2012, 01:20 PM
Group: Student Forum Pilot
Joined: 3-May 12
Member No.: 6,812
I am a new poster here. Hello to all participants and readers
This is the draft version of a book on the WTC collapses:
1: Science vs Subjective Viewpoints
2: WTC Collapses Misrepresented
....2.1: Progressive Floor Collapse in the WTC Towers
....2.2: Purpose of the NIST Reports
....2.3: NIST WTC1 Misrepresentation
....2.4: NIST WTC7 Misrepresentation
....2.5: NIST WTC2 Misrepresentation
....2.6: Bazant Misrepresentation of Collapse Progression
....2.7: Block Mechanics
....2.8: AE911T Misrepresentations of the Collapses
3: Toward Accurate Collapse Histories
4: Reassessing the Question of Demolition
5: Collapses Misrepresented as a False Choice
6: Testing the Thesis for Validity
The same table of contents is on my website, second menu down, here.
Thank you for any questions or feedback to help improve the book.
May 28 2012, 09:20 AM
Group: Valued Member
Joined: 30-January 09
Member No.: 4,095
..then push down on the top
That experiment would have nothing to do with what we observe happening to the spire (well, I know what you're saying given the difference in materials but there's a major difference between a fragile, glued structure and welded cold steel). There is no "load". Just the upper weight of the structure itself.
And if it did simply fall, for whatever reason, are you saying that a welded steel structure would break apart? That's why I was asking if there were any images of the structure in the debris pile.
1. It was last to fall so should be more or less identifiable on top of the debris pile.
2. I'm not presuming that the entire structure would have survived but major portions, no? Again, it was last to fall. No crushing weight to destroy it.
3. Notice what is necessary in Euler buckling experiments and what isn't available to apply to the fall of the spire?
From this paper on Euler buckling experimentation:
"In stability theory, the four cases of Euler buckling represent the elastic flexural buckling of straight bars. Above a specific load - the buckling load - a loss of stability occurs and the bar increasingly changes shape. The axis of the bar is deflected laterally.
Euler describes four cases for the buckling of an elastic bar with central application of compressive force and various methods of support.
WP 121 demonstrates the four cases of Euler buckling. Depending on the end conditions, different weight loads are required until the buckling load is reached and the axes of the bars are laterally deflected. The buckling length is clearly visible against the white backing wall with the grid patterning."
You're also presuming that the lower, what, 30 storys, were as (relatively) narrow as the visible upper structure. You can't make solid statements without all of the data.
Euler buckling also wouldn't necessarily apply given the solid, box like lattice nature of the structure. The two long columns either side are not fixed and do "wobble" but the steel lattice?
The dust trail shows that it wasn't Euler buckling. The two long columns fall sideways but the lattice structure falls through itself (more or less).
Whatever was left of the lower half of the spire was pulled away en bloque to allow for the observations.
Thanks for the description of what the spire actually is, by the way.
Edit: having looked at the videos I'm not 100% on the last image posted being the dust trail.
This post has been edited by onesliceshort: May 28 2012, 09:28 AM
|Lo-Fi Version||Time is now: 24th May 2013 - 11:25 PM|